Quick-sliding bench-vise.



No. 851,397. PATENTED APR. 23, 1907.

. P. BROADBOOKS.

QUICK SLIDING BENCH VISE.

APPLICATION FILED NOV. 13, 1905,

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Unrrnn s'rarns PATRTENT ()FFlGE.

QUICK-SLIDING BENCH-VISE.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed November 13, 1905. Serial No.- 287,011.

To rt/Z who/i1 it 11mg (1011.014111]:

Be it known that 1', PETER BROADBOOKS, a citizen of the United States, residing at Batavia, county of Genesee, and State of New York, have invented a certain new and useful Improvement in Quick-Sliding l3encl1Vises, of which the following is a specification.

My invention relates to a new and useful improvement in quick sliding bench vises, and has for its object to provide such a vise, the sliding jaw of which may be quickly moved back and. forth in clamping and unclamping work and when adjusted to any particular point just prior to tightly clamping said work, the sliding aw will be lirmly locked, and yet when the work is unclamped this jaw may he slid to and fro throughout its full movementwithout the manipulation of any levers or looks.

Another object of my invention is to provide a vise with two friction plates and a screw which shall have a large bearing surface between the head. and the collar so as to lessen the friction thereof.

lVith this end in view this invention consists in the details of construction and com bination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will now he described in detail, referring to the accompanying drawing forming a part of this specification, in which' Figure 1 is a side elevation of the vise made in accordance with my improvement, a portion of the body thereof being broken away so as to clearly show the beveled surface, the meeting of which with the straight surface of the bottom of the guide-way forms one of the locking points for the tail block or slide. Fig. 2, the bottom view of the front jaw showing the safety screw for limiting the movement of said jaw relative to the tail block. Fig. 3, a section of the tail block showing the body, a stationery jaw in front elevation. Fig. 4, a front view of the vise, the operating screw being in section, and Fig. 5, a cross s \ction of a tail block having a single groove formed therein instead of two grooves as shown in Fig. 3.

ln carrying out my invention as here embodied, A represents the body of the vise with which is formed the stationary jaw A,

said. body being provided with the ordinary flanges B by which it may be bolted to the bench or any suitable object, and the body has formed therethrough a rectangular opening as is usual in bench vises, this opening serving as a guide for the tail block adapted to slide therethrough.

Formed with the sides of the body A are the bosses E-through which are threaded the bolts .F, the inner ends of said bolts being flat for the purpos 1 as hereinafter set forth.

The tail block 1) has formed therein the grooves G which run the full length of said block and the lower wall of each of these grooves is at the same angle as the [lat end of the bolt F adapted to bear thereon as clearly shown in Fig. 3, the opening through which the tail block is adapted to slide has its bottom wall beveled or cut away as indicated at H, and where this cutaway surface meets the straight surface of the bottom wall. an edge or line I is formed so that by proper adjustment of the bolts F said line and bolts will serve as clamping points by which the tail block will be firmly locked when pressure is put upon the tail block to draw it upward.

J is the sliding jaw the body of which is fitted upon the forward end of the tail block D so as to slide thereon, and a screw K is threaded into the tail block and provided with the collar l1 and the head M, through which the operating lever N passes in the usual manner.

The operating screw K being reduced to a smaller diameter between the head and the collar gives a larger bearing surface at the point and is held in its relative position to the movable jaw by the frictimi plates 0 and P which are screwed in place by the screws Q.

in practice the operation of my improved vise will he as follows 'lo open the vise the sliding aw is slightly raised so as to carry the tail block out of contact with the bolts F when it may be drawn forward any distance for placing the work between the jaws and by moving it bacluvard until the sliding jaw is in contact with the work and lowering it suliic1ontly to cause the tail block to again backing off the screw K to too great an eX adjustment when in its normally horizontal block, it being obvious that the tail block acts as a lever, a fulcrum being at the line I, the power being represented by the force which the sliding jaw bears upon the work, this force having a tendency to press the forward end of the tail block downward thereby forcing the lower walls of the grooves G firmly against the bolts F. From which it will be seen that the locking of the tail block in any adjustment does not depend upon friction but upon the cramping action given to the tail block when the sliding jaw is forced in contact with the work. To release the work it is only necessary to turn the screw backward a short distance when the pressure will be removed from the work sufliciently to permit the forward end of the tail block to be elevated which will free it from contact with the bolts F and permit it and the sliding jaw to be drawn upon to any extent.

WVhile in my improved vise work may be quickly clamped and unclamped and as firmly held as in the ordinary form of bench vise, and this clamping and unclamping requires the use of only one hand of the operator leaving the other hand free to manipulate the work thereby saving considerable time in the operation of the vise.

The large diameter of the collar L and the head M gives an increased bearing surface upon the plates 0 and P, thus providing a substantial construction at this point.

For small vises and those not intended to handle heavy work the tail block D may have only one groove as indicated at G in Fig. 5.

Any wear which takes place upon the bottom surface of the tail block or the lower walls of the grooves G is readily compensated for by setting up the bolts F.

A screw U is utilized to limit the movements of the sliding jaw J relative to the tail block D thus preventing the operator from tent. A block S is secured to the sliding jaw J to increase its bearing.

Having thus fully described my invention, what I claim as new and useful is,-

1. I11 a vise of the character described, a i body, said body having an opening therethrough, a portion of the bottom wall of said opening being cut away or inclined, a tail block adapted to slide through said opening and be tipped therein, said tail block having a groove formed upon its side, a bolt threaded into the body so that its lower end will bear upon the lower wall of said groove whereby the tail block will be locked in any position and a sliding jaw fitted upon one end I of the tail block, as and for the purpose set forth.

2. In a vise of the character described, a j body, a tail block adapted to slide therethrough, an angle attached or formed upon l the bottom wall of the opening through which the tail block slides, a bolt threaded through this body, the lower end of which is adapted to bear against an inclined surface formed upon the tail block, a movable jaw fitted to slide upon the forward end of the tail block, a screw for operating said aw whereby pressure may be brought to bear upon the work placed between the aws of the Vises, and thus firmly locking the tail block in its adjustment, as specified.

3. The herein described combination of a body, a stationary jaw formed therewith, a tail block adapted to slide through the body and having bevelled surfaces formedthereon, an angle formed upon the bottom wall of the opening in the body through which the tail block slides, bolts threaded through the body and adapted to bear against said beveled surfaces, a movable jaw fitted to slide upon the forward end of the tail block, ascrew j ournalled in the movable jaw and threaded into the tail block and means for revolving said screw, as and for the purpose set forth.

4. In a vise of the character described, a body having an opening formed therethrough for the passage of the tail block, an angle attached or formed upon the lower wall of said opening by said wall being made in two planes, and a bolt threaded through the body, its lower end adapted to bear upon the tail block when the latter is in its locked position whereby said tail block will act as a lever, the fulcrum of which will be the angle I so that when work is clamped in the vise this tail block will be forced upward against the bolt, as specified.

5. In a vise of the character described, a body, a stationary jaw formed therewith, a tail block adapted to slide through the body, bolts threaded through said body and adapted to bear upon the tail block when the latter is in a locked position, a movable jaw adapted to slide upon the forward end of the tail block, a block S attached to the movable jaw, a screw K threaded into the tail block, a collar L formed upon the screw and head M also formed upon the screw, plates 0 and P secured to the movable aw between the collar and the head M so as to hold the screw in place, and a stop screw R for limiting the movement of the movable jaw relative to the tail block, as and for the purpose set forth.

6. In a vise of the character described, the

combination of a body having an opening therethrough for the tail-stock and an angle in the bottom of the opening adapted to serve as a fulcrum and biting point for the tail-stock and upon which the tail-stock may be looked, a smooth-surfaced tail-stock slidably fitted in said opening and resting upon I said angle, an adjustable locking device set in the body above and in rear of the angle and adapted to engage the tail-stock when the latter is. brought to its normal, substantially horizontal, position and to act in conjunction with the angle to automatically lock the tailstock, and a jaw on the forward end of the tail-stock adapted to keep it in normally locked position, substantially as described.

7. In a vise, the combination of a body having an opening therethrough for tire passage of the tail-stock, the bottom wall of said opening having an angle constituting a biting fulcrum for the tailstocl ,-a smooth surfaced tail-stock adapted to slide through said opening and be tipped therein when being adjusted, an adjustable device setin the body above the angle and adapted to bear upon the tail-stock in rear of tilt) angle; whereby the stock will be automatically locked in any adjustment when its outer end is lowered to substantially lio rizontal position, and a jaw on the outer end of tie tail-stock.

S. In a vise, the combination of a body having an opening tllerethrough for tire passage of the tail-stock, the bottom wall of said opening having an angle constituting a biting fulcrum for the smooth surfaced tailstock, a tail-stock adapted to slide through I said opening, a bolt adjustably set in the body above and in rear of the angle and adapted to lliIVC its inner end bear upon the tail-stocl in rear of tire angle whereby the stock will be automatically locked when its outer end is lowered to substantially horizontal position, and a jaw attached to the outer end of the tail-stock.

9. In a vise of tilt character described, the combination of a bodyliaving an opening theretlirougii for the tail-stock and an angle adapted to serve as a fulcrum or biting point upon which the tail-stock may be looked, a smooth surfaced tail-stock slidably fitted in said opening, an adjustable bolt set in tire body above and in rear of the angle and adapted to engage the tail-stock and act, in conjunction with the angle to automatically lOGlC tie tail-steel; in any adjusted position when ti e latter is brougl't to its normal, substantially horizontal, position, a l

l l l justable locking device set in the body above and in rear of the angle tixerein and adapted to engage the inclined bearing surface of the tail-stock to act in conjunction with the angle in the bottom to lock the tail-stock, and a jaw en tire forward end of the tail-stock, for the purpose set forth.

11. In a vise, the combination of a body having an opening tieretilrough for the passage of tire tail-stock, tie bottom wall of said opening having an angle constituting a biting fulcrum for the tail-stocl ,a tail-stock adapted to slide through said opening and be tipped tiltl'tlll 'iLCll being adjusted and having oppositely inclined bearing surfaces on its sides; bolts adjustably set at an angle in tlLe body and adapted to have tieir inner ends bear upon the inclined bearing surfaces of tlie tail-stockin rear of ti;e angle; and a jaw on the outer end of tile tail-stock.

12. In a vise, tiie combination of a body having an opening ireretirougn for ti'Lo passage of tire tailstocl ti 0 bottom wall of said opening being provided with a biting fulcrum for tile tail-stock, and a tail-stock adapted to slide through said opening and having an inclined bearing surface on its side; a bolt adjustably set at an angle in the body above and in rear of the fulcrum and adapted to have its inner end bear perpendicularly upon the inclined bearing surfaces of tie tail-stock in rear of tie fulcrum whereby ti1e stock will be locked witen its outer end is lowered to substantially i1orizontal posi tion, and a jaw attached to the outer end of the tail-stock.

13. In a vise of tlxe character described, the cmnbination of a body lzaving an opening theretizrougii for tire tail-stock and a fulcrum or biting point upon wlich tie tail-stock may be locked, a tail-stock slidably fitted in sa d opening having oppositely inclined bear- .ing surfaces on its opposite sides, oppositely inclined bolts set in tiie body above and .in rear of tie fulcrum and adapted to engage the opposite beari'ngsurfaces of tie tail-stock and act, in conjunction with tire fulcrum to lock t ite tail-stock in any adjusted position, and a jaw mounted upon the forward end of the tailstocl for tire purpose set forth.

In testimony wlereof, I itaye liereujuto affixed my signature in the presence of two subscribing witnesses.

PETER BHOADBOOKS.

\Vitnesses:

(I. H. Bananas, E. B. PERRY. 

